inheritance.php

<?php

/*
| ------------------------------------------------------
| Contoh Inheritance
| ------------------------------------------------------
*/

class Produk
{
	public 	$judul,
		$penulis,
		$penerbit,
		$harga,
		$jmlHalaman,
		$waktuMain;

	public function __construct(
		$judul = "judul",
		$penulis = "penulis",
		$penerbit = "penerbit",
		$harga = 0,
		$jmlHalaman = 0,
		$waktuMain = 0
	) {
		$this->judul = $judul;
		$this->penulis = $penulis;
		$this->penerbit = $penerbit;
		$this->harga = $harga;
		$this->jmlHalaman = $jmlHalaman;
		$this->waktuMain = $waktuMain;
	}

	public function getLabel()
	{
		return "$this->penulis,$this->penerbit";
	}

	public function getInfoProduk()
	{
		$str = "{$this->tipe} : {$this->judul} | {$this->getLabel()} (Rp. {$this->harga})";

		return $str;
	}
}

class Komik extends Produk
{
	public function getInfoProduk()
	{
		$str = "Komik : {$this->judul} | {$this->getLabel()} (Rp. {$this->harga}) - {$this->jmlHalaman} Halaman.";
		return $str;
	}
}

class Game extends Produk
{
	public function getInfoProduk()
	{
		$str = "Game : {$this->judul} | {$this->getLabel()} (Rp. {$this->harga}) - {$this->waktuMain} Jam.";
		return $str;
	}
}

class CetakInfoProduk
{
	public function cetak(Produk $produk)
	{
		$str = "{$produk->judul} | {$produk->getLabel()}, (Rp. {$produk->harga},-)";
		return $str;
	}
}


$produk1 = new Komik("Naruto", "Masashi Kishimoto", "Shounen Jump", 30000, 100, 0);
$produk2 = new Game("Uncharted", "Neil Druckman", "Sony Computer", 250000, 0, 50);

echo $produk1->getInfoProduk();
echo "<br>";
echo $produk2->getInfoProduk();